Dont know much about the browning as im more of a 225 man myself. But that rear sight in that pic is different then what is currently issued or has been issued for the last little while.

If your looking to do a FMU to your BHP, Prime just released a BHP kit buts its super expensive x2 more then a new BHP.

http://www.wgcshop.com/pcart/shopper...PCK65BK_srch_1

as for the rear sight,i havn't used one since 93,i remember the larger rear
sightbut not much of the details,for the tanaka full metal upgrade"WOW"
i guess thats the price one pays to shoot propane. thanks guys for the help:cool: